High-Speed Noncontacting Instrumentation for Jet Engine Testing

[+] Author and Article Information
M. J. Scotto

Advanced Instrumentation, AEG, General Electric Company, Lynn, Mass.

M. E. Eismeier

Instrumentation Design Engineering, AEG, General Electric Company, Evendale, Ohio

J. Eng. Power 102(4), 912-917 (Oct 01, 1980) (6 pages) doi:10.1115/1.3230360 History: Received December 07, 1979; Online September 28, 2009


This paper discusses high-speed, noncontacting instrumentation systems for measuring the operating characteristics of jet engines. The discussion includes optical pyrometers for measuring blade surface temperatures, capacitance clearanceometers for measuring blade tip clearance and vibration, and optoelectronic systems for measuring blade flex and torsion. In addition, engine characteristics that mandate the use of such unique instrumentation are pointed out as well as the shortcomings of conventional noncontacting devices. Experimental data taken during engine testing are presented and recommendations for future development discussed.

Copyright © 1980 by ASME
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